Quantum Theory of Thermoelectric Power (Seebeck Coefficient)

Fujita, Shigeji; Suzuki, Akira

doi:10.5772/30498

Cited by 3 publications

(8 citation statements)

References 24 publications

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“…In this limit the Seebeck coefficient is also independent of relaxation time as is shown explicitly in Ref. [85]. It is also straightforward to see from the definition that the Seebeck coefficient is dimensionless.…”

Section: Resultsmentioning

confidence: 53%

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Thermoelectric effect and Seebeck coefficient for hot and dense hadronic matter

Bhatt¹,

Das²,

Mishra³

2019

Phys. Rev. D

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We investigate the thermoelectric effect for baryon rich plasma produced in heavy ion collision experiments. We estimate the associated Seebeck coefficient for the hadronic matter. Using kinetic theory within relaxation time approximation we calculate the Seebeck coefficient of a hadronic medium with a temperature gradient. The calculation is performed for hadronic matter modeled by the hadron resonance gas model with hadrons and resonance states up to a cutoff in the mass as 2.25 GeV. We argue that the thermoelectric current produced by such effect can produce a magnetic field in heavy ion collision experiments.

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Section: Resultsmentioning

confidence: 53%

“…In this context, it may be relevant to note that, similar to the expression for electrical conductivity, the Seebeck coefficient in Drude picture has been estimated in Ref. [85]. The Seebeck coefficient for a single species in the Drude picture can be written as…”

Section: Boltzmann Equation In Relaxation Time Approximation and Seeb...mentioning

confidence: 89%

Thermoelectric effect and Seebeck coefficient for hot and dense hadronic matter

Bhatt¹,

Das²,

Mishra³

2019

Phys. Rev. D

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“…In FCC silver, the Fermi surface curvatures along each neck axis (111) are positive, sharp, and just touching the Brillouin zone boundary. The density of hole-like states, n h , associated with the <111> necks is much greater than that of electron-like states, n e , associated with the <100> belly, and hence, the Fermi surface generates holes . As a result, the density of thermally excited holes is much higher than that of electron density yielding a positive α.…”

Section: Resultsmentioning

confidence: 93%

“…Since the Seebeck coefficient is nothing but the average energy per charge carrier with respect to Fermi level, , the optimum SM interface potential barriers are seemingly capable of enhancing α by increasing average energy per charge carrier. The negative sign of α for these samples and its decrease with lowering T may be due to diffusion of thermally excited electrons to lower energy levels. , These α data, combined with the ρ analysis above, with SM transition temperature confirm that all samples are n-type nondegenerate semiconductors, except ASA7.…”

Section: Resultsmentioning

confidence: 99%

Ag-Nanoinclusion-Induced Enhanced Thermoelectric Properties of Ag₂S

Tarachand

Mukherjee

Saxena

et al. 2019

ACS Appl. Energy Mater.

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The effects of Ag nanoinclusions on thermoelectric properties of Ag 2 S semiconducting nanostructures, synthesized by a novel one-pot facile polyol method, have been investigated. The resulting products are characterized by powder XRD, EDAX, XPS, and UV−vis techniques. FESEM images reveal the formation of disc-shaped Ag 2 S nanoparticles with an average thickness of 52 nm and diameters ranging from 50 nm to a few hundreds of nm. All samples show a systematic reduction in electrical resistivity with increasing Ag content in the composites. The Seebeck coefficient (α) values for the Ag nanoparticle-incorporated Ag 2 S nanocomposites are notably high near 300 K because of the low-energy charge-carrier filtering effect, which is due to preferential scattering of low-energy electrons at the barrier potentials set up at metal−semiconductor interfaces. The theoretical fitting of α data reveals a systematic shift of the Fermi level toward the conduction band edge with increasing Ag content in the composites. A significantly improved thermoelectric power factor at 325 K is observed for a wide range of Ag nanoinclusions with the highest ZT of 0.0029 at 325 K in the Ag 2 S−Ag nanocomposite with 20.1% Ag.

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“…This means that the electric current runs towards the hightemperature end in an electron (or away from in a hole) rich material. Thus, the Seebeck current arises from the above thermal diffusion of charge carriers [3].…”

Section: Introductionmentioning

confidence: 99%

Thermoelectric Generation Using Industrial Grade Low-Cost Materials

Kobbekaduwa¹,

Subasinghe²

2015

Proceedings of the 2015 International Conference on Sustainable Energy and Environmental Engineering

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Thermoelectric effect or Seebeck effect provides a means by which thermal energy can be converted into electricity directly. Voltage appears between two different types of materials (Conductor or Semiconductor) that are joined together and its junction is heated. While most efficient materials are semiconductors, these are expensive, thus, research into thermoelectric properties of industrial grade materials is very useful for fabrication of low cost devices. Using materials such as Iron, Aluminum and Brass, cheap TEGs were constructed and several parameters were tested for three separate combinations made using these materials. An output voltage up to 0.5mV per couple at a ZT of 0.08 was achieved. It was apparent that using active cooling methods such as ice water or heat sinks with cooling fans increased the output values to around 0.7mV per couple. Although the efficiencies are not high, these TEGs provide low-cost devices that can produce small-scale sustainable energy through co-generation and energy-scavenging.

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Quantum Theory of Thermoelectric Power (Seebeck Coefficient)

Cited by 3 publications

References 24 publications

Thermoelectric effect and Seebeck coefficient for hot and dense hadronic matter

Thermoelectric effect and Seebeck coefficient for hot and dense hadronic matter

Ag-Nanoinclusion-Induced Enhanced Thermoelectric Properties of Ag₂S

Thermoelectric Generation Using Industrial Grade Low-Cost Materials

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Quantum Theory of Thermoelectric Power (Seebeck Coefficient)

Cited by 3 publications

References 24 publications

Thermoelectric effect and Seebeck coefficient for hot and dense hadronic matter

Thermoelectric effect and Seebeck coefficient for hot and dense hadronic matter

Ag-Nanoinclusion-Induced Enhanced Thermoelectric Properties of Ag2S

Thermoelectric Generation Using Industrial Grade Low-Cost Materials

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Product

Resources

About

Ag-Nanoinclusion-Induced Enhanced Thermoelectric Properties of Ag₂S